--- /dev/null
+package org.simantics.spreadsheet.ui;\r
+\r
+import java.awt.Color;\r
+import java.awt.Component;\r
+import java.awt.Rectangle;\r
+import java.io.Serializable;\r
+\r
+import javax.swing.JComponent;\r
+import javax.swing.JLabel;\r
+import javax.swing.JTable;\r
+import javax.swing.SwingConstants;\r
+import javax.swing.border.Border;\r
+import javax.swing.table.TableCellRenderer;\r
+\r
+public class ColumnHeaderRenderer extends JLabel implements TableCellRenderer, Serializable {\r
+\r
+ private static final long serialVersionUID = 1L;\r
+\r
+\r
+ /**\r
+ * An empty <code>Border</code>. This field might not be used. To change the\r
+ * <code>Border</code> used by this renderer override the \r
+ * <code>getTableCellRendererComponent</code> method and set the border\r
+ * of the returned component directly.\r
+ */\r
+\r
+ // We need a place to store the color the JLabel should be returned \r
+ // to after its foreground and background colors have been set \r
+ // to the selection background color. \r
+ // These ivars will be made protected when their names are finalized. \r
+ private Color unselectedForeground; \r
+ private Color unselectedBackground; \r
+\r
+ /**\r
+ * Creates a default table cell renderer.\r
+ */\r
+ public ColumnHeaderRenderer() {\r
+ super();\r
+ setOpaque(true);\r
+ setHorizontalAlignment(SwingConstants.CENTER);\r
+ setBackground(DefaultLookup.GRAY);\r
+ setBorder(getNoFocusBorder());\r
+ setName("Table.cellRenderer");\r
+ }\r
+\r
+ private Border getNoFocusBorder() {\r
+ return TableBorder.BORDER;\r
+ }\r
+\r
+ /**\r
+ * Overrides <code>JComponent.setForeground</code> to assign\r
+ * the unselected-foreground color to the specified color.\r
+ * \r
+ * @param c set the foreground color to this value\r
+ */\r
+ public void setForeground(Color c) {\r
+ super.setForeground(c); \r
+ unselectedForeground = c; \r
+ }\r
+\r
+ /**\r
+ * Overrides <code>JComponent.setBackground</code> to assign\r
+ * the unselected-background color to the specified color.\r
+ *\r
+ * @param c set the background color to this value\r
+ */\r
+ public void setBackground(Color c) {\r
+ super.setBackground(c); \r
+ unselectedBackground = c; \r
+ }\r
+\r
+ /**\r
+ * Notification from the <code>UIManager</code> that the look and feel\r
+ * [L&F] has changed.\r
+ * Replaces the current UI object with the latest version from the \r
+ * <code>UIManager</code>.\r
+ *\r
+ * @see JComponent#updateUI\r
+ */\r
+ public void updateUI() {\r
+ super.updateUI(); \r
+ setForeground(null);\r
+ setBackground(null);\r
+ }\r
+\r
+ // implements javax.swing.table.TableCellRenderer\r
+ /**\r
+ *\r
+ * Returns the default table cell renderer.\r
+ * <p>\r
+ * During a printing operation, this method will be called with\r
+ * <code>isSelected</code> and <code>hasFocus</code> values of\r
+ * <code>false</code> to prevent selection and focus from appearing\r
+ * in the printed output. To do other customization based on whether\r
+ * or not the table is being printed, check the return value from\r
+ * {@link javax.swing.JComponent#isPaintingForPrint()}.\r
+ *\r
+ * @param table the <code>JTable</code>\r
+ * @param value the value to assign to the cell at\r
+ * <code>[row, column]</code>\r
+ * @param isSelected true if cell is selected\r
+ * @param hasFocus true if cell has focus\r
+ * @param row the row of the cell to render\r
+ * @param column the column of the cell to render\r
+ * @return the default table cell renderer\r
+ * @see javax.swing.JComponent#isPaintingForPrint()\r
+ */\r
+ public Component getTableCellRendererComponent(JTable table, Object value,\r
+ boolean isSelected, boolean hasFocus, int row, int column) {\r
+\r
+ Color fg = null;\r
+ Color bg = null;\r
+\r
+ JTable.DropLocation dropLocation = table.getDropLocation();\r
+ if (dropLocation != null\r
+ && !dropLocation.isInsertRow()\r
+ && !dropLocation.isInsertColumn()\r
+ && dropLocation.getRow() == row\r
+ && dropLocation.getColumn() == column) {\r
+\r
+ fg = DefaultLookup.getColor(this, ui, "Table.dropCellForeground");\r
+ bg = DefaultLookup.getColor(this, ui, "Table.dropCellBackground");\r
+\r
+ isSelected = true;\r
+ }\r
+\r
+ if (isSelected) {\r
+ super.setForeground(fg == null ? table.getSelectionForeground()\r
+ : fg);\r
+ super.setBackground(bg == null ? table.getSelectionBackground()\r
+ : bg);\r
+ } else {\r
+ Color background = unselectedBackground != null\r
+ ? unselectedBackground\r
+ : table.getBackground();\r
+ if (background == null || background instanceof javax.swing.plaf.UIResource) {\r
+ Color alternateColor = DefaultLookup.getColor(this, ui, "Table.alternateRowColor");\r
+ if (alternateColor != null && row % 2 == 0)\r
+ background = alternateColor;\r
+ }\r
+ super.setForeground(unselectedForeground != null\r
+ ? unselectedForeground\r
+ : table.getForeground());\r
+ super.setBackground(background);\r
+ }\r
+\r
+ setFont(table.getFont());\r
+\r
+ if (hasFocus) {\r
+ Border border = null;\r
+ if (isSelected) {\r
+ border = DefaultLookup.getBorder(this, ui, "Table.focusSelectedCellHighlightBorder");\r
+ }\r
+ if (border == null) {\r
+ border = DefaultLookup.getBorder(this, ui, "Table.focusCellHighlightBorder");\r
+ }\r
+ setBorder(border);\r
+\r
+ if (!isSelected && table.isCellEditable(row, column)) {\r
+ Color col;\r
+ col = DefaultLookup.getColor(this, ui, "Table.focusCellForeground");\r
+ if (col != null) {\r
+ super.setForeground(col);\r
+ }\r
+ col = DefaultLookup.getColor(this, ui, "Table.focusCellBackground");\r
+ if (col != null) {\r
+ super.setBackground(col);\r
+ }\r
+ }\r
+ } else {\r
+ setBorder(getNoFocusBorder());\r
+ }\r
+\r
+ setValue(value); \r
+\r
+ return this;\r
+ }\r
+\r
+ /*\r
+ * The following methods are overridden as a performance measure to \r
+ * to prune code-paths are often called in the case of renders\r
+ * but which we know are unnecessary. Great care should be taken\r
+ * when writing your own renderer to weigh the benefits and \r
+ * drawbacks of overriding methods like these.\r
+ */\r
+\r
+ /**\r
+ * Overridden for performance reasons.\r
+ * See the <a href="#override">Implementation Note</a> \r
+ * for more information.\r
+ */\r
+ public boolean isOpaque() { \r
+ Color back = getBackground();\r
+ Component p = getParent(); \r
+ if (p != null) { \r
+ p = p.getParent(); \r
+ }\r
+\r
+ // p should now be the JTable. \r
+ boolean colorMatch = (back != null) && (p != null) && \r
+ back.equals(p.getBackground()) && \r
+ p.isOpaque();\r
+ return !colorMatch && super.isOpaque(); \r
+ }\r
+\r
+ /**\r
+ * Overridden for performance reasons.\r
+ * See the <a href="#override">Implementation Note</a> \r
+ * for more information.\r
+ *\r
+ * @since 1.5\r
+ */\r
+ public void invalidate() {}\r
+\r
+ /**\r
+ * Overridden for performance reasons.\r
+ * See the <a href="#override">Implementation Note</a> \r
+ * for more information.\r
+ */\r
+ public void validate() {}\r
+\r
+ /**\r
+ * Overridden for performance reasons.\r
+ * See the <a href="#override">Implementation Note</a> \r
+ * for more information.\r
+ */\r
+ public void revalidate() {}\r
+\r
+ /**\r
+ * Overridden for performance reasons.\r
+ * See the <a href="#override">Implementation Note</a> \r
+ * for more information.\r
+ */\r
+ public void repaint(long tm, int x, int y, int width, int height) {}\r
+\r
+ /**\r
+ * Overridden for performance reasons.\r
+ * See the <a href="#override">Implementation Note</a> \r
+ * for more information.\r
+ */\r
+ public void repaint(Rectangle r) { }\r
+\r
+ /**\r
+ * Overridden for performance reasons.\r
+ * See the <a href="#override">Implementation Note</a> \r
+ * for more information.\r
+ *\r
+ * @since 1.5\r
+ */\r
+ public void repaint() {\r
+ }\r
+\r
+ /**\r
+ * Overridden for performance reasons.\r
+ * See the <a href="#override">Implementation Note</a> \r
+ * for more information.\r
+ */\r
+ protected void firePropertyChange(String propertyName, Object oldValue, Object newValue) { \r
+ // Strings get interned...\r
+ if (propertyName=="text"\r
+ || propertyName == "labelFor"\r
+ || propertyName == "displayedMnemonic"\r
+ || ((propertyName == "font" || propertyName == "foreground")\r
+ && oldValue != newValue\r
+ && getClientProperty(javax.swing.plaf.basic.BasicHTML.propertyKey) != null)) {\r
+\r
+ super.firePropertyChange(propertyName, oldValue, newValue);\r
+ }\r
+ }\r
+\r
+ /**\r
+ * Overridden for performance reasons.\r
+ * See the <a href="#override">Implementation Note</a> \r
+ * for more information.\r
+ */\r
+ public void firePropertyChange(String propertyName, boolean oldValue, boolean newValue) { }\r
+\r
+\r
+ /**\r
+ * Sets the <code>String</code> object for the cell being rendered to\r
+ * <code>value</code>.\r
+ * \r
+ * @param value the string value for this cell; if value is\r
+ * <code>null</code> it sets the text value to an empty string\r
+ * @see JLabel#setText\r
+ * \r
+ */\r
+ protected void setValue(Object value) {\r
+ setText((value == null) ? "" : value.toString());\r
+ }\r
+\r
+}\r
Code Review / simantics / platform.git / blobdiff